DWA01CM485A [ETC]

Monitoring Relays 3-Phase Load Guard; 监控继电器3相负载保护


型号：	DWA01CM485A
厂家：	ETC
描述：	Monitoring Relays 3-Phase Load Guard 监控继电器3相负载保护继电器监控
文件：	总4页 (文件大小：136K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

Monitoring Relays

3-Phase Load Guard

Types DWA01, PWA01

• Cos ϕ monitoring relays

• Measuring if power factor is within set limits

• Measure on own power supply (voltage) and current

for balanced systems

• Measuring ranges for current: 5A and MI current

transformers range

• Power ON delay 1, 2 or 6 s selectable

• Knob adjustable level on absolute scale

• Output: 8 A SPDT relay Normally Energized

• For mounting on DIN-rail in accordance with DIN/EN

50 022 (DWA01) or plug-in module (PWA01)

• 22.5 mm Euronorm housing (DWA01) or 36 mm

plug-in module (PWA01)

DWA01

PWA01

• LED indication for power supply and output ON

Product Description

Ordering key

DWA 01 C M48 5A

DWA01 and PWA01 are pre- For current measure direct Housing

cise over or under cos ϕ connection, 5A standard cur- Function

monitoring relays.

The relays monitor their own can be used.

power supply voltage and The LED's indicate the state Output

the current of a balanced 3- of the alarm and the output Power Supply

rent transformers and MI CT Type

Item number

phase system.

relay.

Range

Type Selection

Mounting

Output

Supply: 208 to 240 VAC

Supply: 380 to 415 VAC

PWA 01 C M48 5A

Supply: 380 to 480 VAC

DWA 01 C M48 5A

DIN-rail

Plug-in

SPDT

DWA 01 C M23 5A

PWA 01 C M23 5A

Input Specifications

Input

Note:

Voltage (Own power supply):

The input voltage cannot

raise over 300 VAC with

respect to ground (PWA01

only).

3 - phase

DWA01:

PWA01:

M23:

DWA01CM48:

PWA01CM48:

L1, L2, L3

5, 6, 7

208 to 240 VAC 15%

380 to 480 VAC 15%

380 to 415 VAC 15%

L1, L3

Hysteresis

~ cos ϕ = 0,02 - fixed

1- phase DWA01CM235A:

PWA01CM235A:

5, 7

208 to 240 VAC 15%

5A: Y1, Y2

MI CT: Y1, Y3

5A: 7, 5

Current

DWA01:

PWA01:

Output Specifications

MI CT: 7, 6

Measuring ranges

Output

SPDT relay

Level

0.1 to 0.99

Rated insulation voltage

250 VAC

Power factor (cos ϕ)

Contact ratings (AgSnO₂)

Resistive loads

AC 1

DC 12

8 A @ 250 VAC

5 A @ 24 VDC

2.5 A @ 250 VAC

2.5 A @ 24 VDC

AACrms

0.5 to 5 A

Max. curr.

Direct input

30A 30s

Small inductive loads AC 15

DC 13

Standard CT (examples)

TADK 2 50 A/5 A

TAD 2 150 A/5 A

TAD 6 400 A/5 A

TAD 12 1000 A/5 A

TACO 200 6000 A/5 A

MI CT ranges

≥ 30 x 10⁶operations

5 to 50 A

15 to 150 A

40 to 400 A

100 to 1000 A 1200 A

600 to 6000 A 7200 A

AAC rms

60 A

180 A

480 A

Mechanical life

Electrical life

≥ 10⁵operations

(at 8 A, 250 V, cos ϕ = 1)

Operating frequency

≤ 7200 operations/h

Dielectric strength

Max. curr.

250 AAC

750 AAC

Dielectric voltage

≥ 2 kVAC (rms)

MI 100

MI 500

10 to 100 A

50 to 500 A

Rated impulse withstand volt. 4 kV (1.2/50 µs)

Specifications are subject to change without notice (09.12.05)

DWA01, PWA01

Supply Specifications

General Specifications

Power supply

Rated operational voltage

through terminals:

DWA01:

Overvoltage cat. III

(IEC 60664, IEC 60038)

Power ON delay

Reaction time

1, 2, or 6 s 0.5 s

(input signal variation from

-20% to +20% or from

+20% to -20% of set value)

< 400 ms

L1, L2, L3

5, 6, 7

177 to 276 VAC 45 to 65 Hz

323 to 552 VAC 45 to 65 Hz

323 to 477 VAC 45 to 65 Hz

PWA01:

Alarm ON delay

Alarm OFF delay

M23

DWA01CM48

PWA01CM48

< 400 ms

Accuracy

Temperature drift

Repeatability

(15 min warm-up time)

1000 ppm/°C

0.5% on full-scale

Dielectric voltage

supply to output

None

2kV

Indication for

Power supply ON

Output ON

LED, green

LED, yellow

Rated operational power

Supplied by

13 VA @400VAC

L1 and L3

Environment

Degree of protection

Pollution degree

IP 20

3 (DWA01), 2 (PWA01)

Operating temperature

@ Max. voltage, 50 Hz

@ Max. voltage, 60 Hz

Storage temperature

Function/Delay/Level Settings

-20 to 60°C, R.H. < 95%

-20 to 50°C, R.H. < 95%

-30 to 80°C, R.H. < 95%

Level setting (cos ϕ):

Setting of function and

Knob adjustable on absolute power ON delay

scale, from 0.1 to 0.99

Adjust the desired function

Housing dimensions

DIN-rail version

Plug-in version

(over or underload monitor-

ing) with DIP switch 1 and

the power ON delay with

DIP Switches 3 and 4 as

shown on the below table.

To access the DIP-switch

open the plastic cover using

a screwdriver as shown on

the left.

22.5 x 80 x 99.5 mm

36 x 80 x 94 mm

Weight

Screw terminals

Tightening torque

Approx. 200 g

Max. 0.5 Nm

acc. to IEC 60947

Approvals

CE-Marking

UL, CSA

Yes

EMC

Immunity

Emission

Electromagnetic Compatibility

According to EN 61000-6-2

According to EN 61000-6-3

Monitoring function

ON: Under cos ϕ

OFF: Over cos ϕ

Not used

Power ON delay

SW3 SW4

OFF OFF:6 sec

ON OFF:2 sec

ON ON: 1 sec

Mode of Operation

DWA01 and PWA01 can be underload) can be indirectly delay at power ON in order yellow LED is ON as long as

used for monitoring the detected by DWA01 and to avoid overload detection cos ϕ is above the set limit.

actual load of asynchronous PWA01.

motors.

The relays measure the 3- load and cos ϕ depends on Example 1:

phase supply voltage and the type of motor. Overload monitoring.

during motor start.

The relay releases when it

drops below the set level.

The relation between the

Example 3:

the current of the phase L1 As a guideline to ensure cor- The relay operates and the DWA01CM235A

and

connected to an asyn- rect working conditions for a yellow LED is ON as long as PWA01CM235A can be used

chronous motor. motor, the level could be set cos ϕ is below the set limit. for monitoring the cos ϕ of a

The relay monitor the cosine above (or below) the cos ϕ The relay releases when it 1-Phase load with 208 to 240

of the angle between motor marking on the motor. It is exceeds the set level.

current and motor voltage however recommended to

V AC mains voltgage. In this

case the power supply has to

be connected between L1, L3

(or 5, 7) and L2 and L3 (or 6

(cos ϕ).

make the adjustment in con- Example 2:

Underload monitoring.

As cos ϕ varies with the load nection with a practical test.

of the motor, overload (or The relay has an inhibit The relay operates and the and 7) have to be connected.

Specifications are subject to change without notice (09.12.05)

DWA01, PWA01

Wiring Diagrams

DWA01 - Direct connection

PWA01 - Direct connection

L1 L2 L3

cos ϕ

cos j

cos ϕ

cos j

DWA01 - Standard CT

PWA01 - Standard CT

L1 L2 L3

cos j

cos ϕ

ccooss j

DWA01 - MI CT

PWA01 - MI CT

L1 L2 L3

cos ϕ

cos j

cos ϕ

cos j

Grey

DWA01CM235A - Direct connection - 1-Phase Load

PWA01CM235A - Direct connection - 1-Phase Load

L1 L2 L3

cos j

cos ϕ

cos j

cos ϕ

Specifications are subject to change without notice (09.12.05)

DWA01, PWA01

Operation Diagrams

Overload monitoring

Power supply

Level

Hysteresis

cos j

cos ϕ

Relay ON

Underload monitoring

Power supply

Hysteresis

Level

cos j

cos ϕ

Relay ON

Dimensions

DIN-rail

Plug-in

22.5

99.5

28.5

Specifications are subject to change without notice (09.12.05)

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